显示总数没有。两个日期之间的天数 [英] displaying total no. of days between two dates

问题描述

我有3个textbox.first两个文本框包含calander控件（从日期/到日期）。我想实现这样的功能，当我选择第二个文本框日期时，应显示总天数第三个文本框，即（来自）.i达到了这个程度：



DateTime a，b;

a = Convert.ToDateTime（TextBox1.Text）;

b = Convert.ToDateTime（TextBox2.Text）;



System.TimeSpan span = b - a;

int ddays =（int）span.TotalDays;

textbox3.Text = Convert.ToString（ddays）;



但是，我无法像之前所说的那样在第三个文本框中显示日期。问题是，在哪里实现此代码，以便我可以获得所需的输出。任何帮助都将是非常感兴趣。

解决方案

你可以通过2种方式使用...

1）文本框文本更改事件

2）按钮单击envet

< asp：TextBox ID =   TextBox3 runat =   server >  < /   asp：TextBox  >  
< br /> 
< asp：TextBox ID =   TextBox4 runat =   server   AutoPostBack   =   True 
 ontextchanged =   TextBox4_TextChanged >  < /   asp：TextBox  >  
< asp：按钮ID =   Button2 runat =   server onclick =   Button2_Click Text =  按钮 /> 
< br /> 
< asp：TextBox ID =   TextBox5 runat =   server >  < /   asp：TextBox  >  

  protected   void  Button2_Click（ object  sender，EventArgs e）
 {
 DateTime a，b; 
 a = Convert.ToDateTime（TextBox3.Text）; 
 b = Convert.ToDateTime（TextBox4.Text）; 
 
 System.TimeSpan span = b  -  a; 
  int  ddays =（ int ）span.TotalDays; 
 TextBox5.Text = Convert.ToString（ddays）; 
} 
 受保护  void  TextBox4_TextChanged（ object  sender，EventArgs e）
 {
 DateTime a，b; 
 a = Convert.ToDateTime（TextBox3.Text）; 
 b = Convert.ToDateTime（TextBox4.Text）; 
 
 System.TimeSpan span = b  -  a; 
  int  ddays =（ int ）span.TotalDays; 
 TextBox5.Text = Convert.ToString（ddays）; 
} 

如果您发现，它适合您，请将其标记为ans。



谢谢

Asp.Net/C#.Net帮助 [ ^ ]

Hemant Singh

< blockquote>我已经尝试过你的代码，它确实对我有用。尝试在代码上添加断点并检查值是否来自文本框控件？

您可以在第二个日历中添加代码选择更改的事件

 受保护  void  Calendar2_SelectionChanged （ object  sender，EventArgs e）
 {
 
} 

I have 3 textbox.first two text box contains calander controls(from date/to date).i want to implement such a functionality that,as n when i select the second textbox date,total no of days should be displayed in the third textbox,that is (to-from).i have reached to this extent:

DateTime a, b;
a = Convert.ToDateTime(TextBox1.Text);
b = Convert.ToDateTime(TextBox2.Text);

System.TimeSpan span = b - a;
int ddays = (int)span.TotalDays;
textbox3.Text = Convert.ToString(ddays);

but,i am not able to display days in third textbox as i said before.The question is,where to implement this code such that i can get the desired output.Any help would be greatly appriciated.

解决方案

You can aplly by using 2 way...
1) textbox text changed event
2) button click envet

<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
       <br />
       <asp:TextBox ID="TextBox4" runat="server" AutoPostBack="True"
           ontextchanged="TextBox4_TextChanged"></asp:TextBox>
       <asp:Button ID="Button2" runat="server" onclick="Button2_Click" Text="Button" />
       <br />
       <asp:TextBox ID="TextBox5" runat="server"></asp:TextBox>

protected void Button2_Click(object sender, EventArgs e)
    {
        DateTime a, b;
        a = Convert.ToDateTime(TextBox3.Text);
        b = Convert.ToDateTime(TextBox4.Text);

        System.TimeSpan span = b - a;
        int ddays = (int)span.TotalDays;
        TextBox5.Text = Convert.ToString(ddays);
    }
    protected void TextBox4_TextChanged(object sender, EventArgs e)
    {
        DateTime a, b;
        a = Convert.ToDateTime(TextBox3.Text);
        b = Convert.ToDateTime(TextBox4.Text);

        System.TimeSpan span = b - a;
        int ddays = (int)span.TotalDays;
        TextBox5.Text = Convert.ToString(ddays);
    }

If you find, it works for you please mark it as ans.

Thanks
Asp.Net/C#.Net help[^]
Hemant Singh

I have tried with your code and it did worked for me. Try to add a break point on your code and check if the values are coming at your text box control or not ?

you can add code in second calendar Selection changed event

protected void Calendar2_SelectionChanged(object sender, EventArgs e)
        {

        }

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